Devel::Chitin::GetVarAtLevel - Evaluate an expression in the debugged program's context
This module is the implementation behind the method Devel::Chitin::get_var_at_level(). It attempts to return the value of the given variable expression in the context of the debugged program, at some arbirtary stack frame.
It handles simple expressions like variables (which must include the sigil)
$my_variable
@our_variable
%bare_variable
$Some::Package::Variable
It also attempts to handle more complicated expressions such as elements and slices of arrays and hashes.
$hash{'key'}
@hash{'key1','key2', $var_with_key}
@array[ $first .. $second ]
Parsing of these more complicated expressions is handled by regexes instead of a proper grammar, and will probably blow up if you try anything really fancy.
When evaluating a variable, it first tries finding it as a my variable, then as an our variable, and finally as a variable in the package the requested call frame is in.
my
our
Devel::Chitin
Anthony Brummett <brummett@cpan.org>
Copyright 2017, Anthony Brummett. This module is free software. It may be used, redistributed and/or modified under the same terms as Perl itself.
To install Devel::Chitin, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Devel::Chitin
CPAN shell
perl -MCPAN -e shell install Devel::Chitin
For more information on module installation, please visit the detailed CPAN module installation guide.